The light in the tunnel ,

Hueforge

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.4mm

Filaments Used:
PLA BambuLab Basic Black Transmission Distance: 0.6
PLA BambuLab Basic Blue Transmission Distance: 4
PLA BambuLab Basic Red Transmission Distance: 3.9
PLA BambuLab Basic Orange Transmission Distance: 5
PLA BambuLab Basic Yellow Transmission Distance: 6
PLA BambuLab Basic Jade White Transmission Distance: 5

Swap Instructions:
Start with Black
At layer #7 (0.64mm) swap to Blue
At layer #9 (0.8mm) swap to Red
At layer #11 (0.96mm) swap to Orange
At layer #14 (1.2mm) swap to Yellow
At layer #18 (1.52mm) swap to Jade White for the rest.